package com.ruoyi.device.uav.controller;

import com.dtflys.forest.exceptions.ForestNetworkException;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.github.pagehelper.util.StringUtil;
import com.ruoyi.common.core.controller.BaseController;
import com.ruoyi.utils.forest.UavClient;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.codec.binary.StringUtils;
import org.jetbrains.annotations.Nullable;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpMethod;
import org.springframework.web.bind.annotation.*;

import javax.annotation.PostConstruct;
import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.*;

import org.apache.commons.codec.binary.Base64;

import static org.springframework.http.HttpMethod.*;

/**
 * 相机设备Controller
 *
 * @author ruoyi
 * @date 2023-01-31
 */
@Slf4j(topic = "uav")
@RestController
@RequestMapping("/device/uav")
@Api(tags = "无人机外部接口")
public class ArdUavController extends BaseController {
    public static final String USERNAME = "ardbailu";//用户名
    public static final String PASSWORD = "ardkj12345";//密码
    public static final String SALT = "0123456789012345";//盐

    //token 登陆后每次请求,在header中携带
    private String token;//登录成功返回的token
    private ObjectMapper om = new ObjectMapper();

    @Autowired
    private UavClient uavClient;

    @PostConstruct
    public void created() {
        this.uavLogin();
    }

    public void uavLogin() {
        String codedPassword = this.Encrypt(PASSWORD, SALT);
        String body = "{\"username\":\"" + USERNAME + "\",\"password\":\"" + codedPassword + "\"}";
        try {
            String res = uavClient.POST("login", null, body);
            Map resMap = om.readValue(res, Map.class);
            Map data = (Map) resMap.get("data");
            if (data != null) {
                this.token = (String) data.get("access_token");
            }
        } catch (ForestNetworkException e) {
            e.printStackTrace();
        } catch (JsonMappingException e) {
            throw new RuntimeException(e);
        } catch (JsonProcessingException e) {
            throw new RuntimeException(e);
        }
    }

    @GetMapping("/")
    @ApiOperation("无人机get接口")
    public Object get(@RequestParam String url, @RequestParam String data) {
        return doUavRequest(GET, url, data);

    }

    @PostMapping("/")
    @ApiOperation("无人机post接口")
    public Object post(@RequestParam String url, @RequestParam String data) {
        return doUavRequest(POST, url, data);
    }

    @DeleteMapping("/")
    @ApiOperation("无人机delete接口")
    public Object delete(@RequestParam String url, @RequestParam String data) {
        return doUavRequest(DELETE, url, data);
    }

    @Nullable
    private String doUavRequest(HttpMethod method, String url, String data) {
        String res = null;
        Method requestMethod = null;
        //获取method
        try {
            requestMethod = UavClient.class.getMethod(method.name(), String.class, String.class, String.class);
        } catch (NoSuchMethodException e) {
            e.printStackTrace();
        }
        //执行method
        try {
            res = (String) requestMethod.invoke(this.uavClient, url, this.token, data);
        } catch (InvocationTargetException e) {
            ForestNetworkException fe = (ForestNetworkException) e.getCause();
            if (fe.getStatusCode() == 401) {//token失效,重新登录
                this.uavLogin();
            }
            try {//再次调用接口
                res = (String) requestMethod.invoke(this.uavClient, url, this.token, data);
            } catch (IllegalAccessException ex) {
                throw new RuntimeException(ex);
            } catch (InvocationTargetException ex) {
                throw new RuntimeException(ex);
            }
        } catch (IllegalAccessException e) {
            throw new RuntimeException(e);
        }

        return res;
    }


    public String Encrypt(String sSrc, String sKey) {
        if (sKey == null) {
            System.out.print("Key为空null");
            return null;
        }
        // 判断Key是否为16位
        if (sKey.length() != 16) {
            System.out.print("Key长度不是16位");
            return null;
        }
        byte[] encrypted = null;
        try {
            byte[] raw = sKey.getBytes("utf-8");
            SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");//"算法/模式/补码方式"
            cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
            encrypted = cipher.doFinal(sSrc.getBytes("utf-8"));
        } catch (Exception e) {
            e.printStackTrace();
            ;
        }
        return new Base64().encodeToString(encrypted);//此处使用BASE64做转码功能，同时能起到2次加密的作用。
    }

}